1. Hughes, Thomas L. 1976.The Fate of Facts in a World of Men — Foreign Policy and Intelligence Making, 5New York: Foreign Policy Association, December. No. 233
2. Cline, Ray S. 1980. ‘The Role of Intelligence in the Foreign Policy Process’. Hearings before the Subcommittee on International Security and Scientific Affairs of the Committee on Foreign Affairs House of Representatives 96th Congress. 1980, Washington, D.C. pp.7–8.
3. Hughes.The Fate of Facts16